Just picked up a used Mini 14, with a Butler Creek folding stock.

It is an older series, 184.

We took it out to shoot.

I was using both stock Ruger Mags and Pro Mag magazines.

I was using cheap Tul Ammo, 55 gr. FMJ steel cased ammo.

The gun fired.

Ejected the fired cartridge, but did not cycle/feed the next round into the chamber.

It did this with both mags.

Thank you for you help, David.